int my_function(returnType(*parameterName)(parameterTypes)); (example code) As areturn value from a function: returnType(*my_function(int, ...))(parameterTypes); (example code) As acast(but try not to cast functions): ... (returnType(*)(parameterTypes))my_expression ... ...
int my_function(returnType(*parameterName)(parameterTypes)); (example code) As areturn value from a function: returnType(*my_function(int, ...))(parameterTypes); (example code) As acast(but try not to cast functions): ... (returnType(*)(parameterTypes))my_expression ... ...
The void pointer within C is a pointer that is not allied with any data types. This points to some data location within the storage means points to that address of variables. It is also known as a general-purpose pointer. In C, malloc() and calloc() functions return void * or generic...
Function Pointer are pointers i.e. variable, which point to the address of a function. One can use them to replace switch/if-statements, to realize your own late-binding or to implement callbacks. Function pointers will callfunctions during run time. When should we declare a function in C?
Pointers and Functions A function can take a pointer to any data type, as argument and can return a pointer to any data type. For example, the function definition double *maxp(double *xp, double *yp) { return *xp >= *yp ? x; ...
C is not an object-oriented language, so it does not contain the member functions like C++. In short, In C language we can’t create the function in structure the C language. But using the function pointer we can provide these features. These function pointer will treat like the member ...
/*function pointer example in c.*/#include <stdio.h>//function: sum, will return sum of two//integer numbersintaddTwoNumbers(intx,inty) {returnx+y; }intmain() {inta, b, sum;//function pointer declarationint(*ptr_sum)(int,int);//function initialisationptr_sum=&addTwoNumbers; a=10...
As a cast (but try not to cast functions): ... (returnType (*)(parameterTypes))my_expression ... (example code) As a function pointer typedef: typedef returnType (*typeName)(parameterTypes); (example code) As a function typedef: typedef returnType typeName(parameterTypes); (example code...
In this example the function parameterptris a void pointer and character pointer (string)strwill be assigned in it and program will print the string through void pointer. Related Tutorials Strings in C language programming Standard Library String functions in C language ...
So far we have studied functions that either return a value or have a void return type. A function can also return a pointer to a data item of any type. However, we must be careful while returning pointers from a function. A common mistake would be to return a pointer to a local var...